high moby

/hi:' mohb'ee/ The high half of a 512K PDP-10's physical
address space; the other half was of course the low moby.
This usage has been generalised in a way that has outlasted
the PDP-10; for example, at the 1990 Washington D.C. Area
Science Fiction Conclave (Disclave), when a miscommunication
resulted in two separate wakes being held in commemoration of
the shutdown of MIT's last ITS machines, the one on the
upper floor was dubbed the "high moby" and the other the "low
moby". All parties involved grokked this instantly. See
moby.